Automatic incinerator



Aug. 30, 1955 A. SMART 2,716,386

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,f l ,/f INVENTOR. E 1'9 Z f 26 AVON SMART A T Tak/VSX Aug. 30, 1955 A. SMART AUTOMATIC INCINERATOR 2 Sheets-Sheet 2 Filed Aug. 18, 1952 lNvEN-roR AvoN SMART.

A T'roR n EY United States PatetO AUTOMATIC INCINERATOR Avon Smart, Detroit, Mich. y Application August 18, 1952, Serial No. 305,059

2 Claims. (Cl. 110- 18)` This invention relaties to domestic household appliances, and has particular reference to an incinerator for use in disposing of garbage, paper, rubbish, and the like. t

, An object of the invention is to providel an incinerator for domestic purposes which is compact, efcient, inexpensive to manufacture, readily installed, and entirely automatic in operation.

Another object of the invention is to provide an incinerator for domestic purposes, which has a high safety factor, and which may be used by any member of the family, including comparatively young children, without danger of having the user injured and without danger of causing damage to the interior of a dwelling, no matter where the installation may be made.

Another object of the invention is the provision of a domestic incinerator which is constructed and arranged so that the act of loading the device with refuse to be disposed of is all that is necessary to start it operating.

Another object of the invention is to provide a device of the character indicated, which is constructed and arranged so that it will remain in operation only so long as there is an ample quantity of refuse remaining in it to be consumed.

The foregoing and other objects and advantages of the invention will become more apparent as the description proceeds, reference being made from time to time to the accompanying drawing forming part of the within disclosure, in which drawing:

Fig. 1 is a side elevational view ofa device embodying the invention, with parts broken away to illustrate the relation of other parts.

Fig. 2 is a section taken substantially on the line 2-2 of Fig. 1.

Fig. 3 is an enlarged fragmentary detail of the switch mechanism shown it the lower right-hand side of Figure l.

Fig. 4 is an elevational view of the opposite side of the device illustrated in Fig. 1, and illustrating the loading door in its opened position.

Fig. 5 is an enlarged fragmentary detail, taken substantially on the line 5-5 of Fig. 4.

Fig. 6 is an enlarged fragmentary detail taken substantially on the line 6 6 of Fig. 4.

Fig. 7 is a diagrammatic view of the electric circuit employed in the device.

Referring now more particularly to the drawing, it will be understood that in the embodiment herein disclosed, the reference character 11 indicates the outer wall, the reference character 12 indicates the inner wall, and the reference character 13 indicates a suitable insulation between the walls of the receptacle which embodies the housing and principal part of the incinerator. The housing is provided at the top with a comparatively heavy loading door 14, and at the bottom with a clean out door 15, which respectively provide access to the combustion compartment 16 and the ash compartment 17 (Fig. l).

The combustion compartment 16 is provided with a flue 16A, which may be connected to the chimney of the 2,716,386 Patented Aug.- 30, 1955 house, or may be in direct contact with the atmosphere outside of the house. The combustion compartment 16 and the ash compartment 17 are separated by means of a comparatively shallow dish like partition 18, which is supported by any lsuitable means, such as a ring or flange 19secured to the inside wall 12. The member 18` serves as a grate and as a support for the refuse material 20, which is intended to be disposed of.. The grate 18 is formed of two semi-circular elements which are separated from one another along the center, as at 21 andV 22 (Fig. 2) whereby to provide space for the flame 23 which emanates from the gas burner 24, which is supplied with gas through the gas pipe 25, the ow of which is controlled by means of the electrically controlled valve 26.

Adapted' to rock in the opening 27 formed vbetween the semi-circular grate members 21 and 22 is a trigger arm 28, which is normally in the elevated position shown by the dotted lines in Fig. l. The trigger 28 is pivoted,

vas at 29, in a suitable bracket 30 carried on the outside lof the inner wall 12, and is adapted to actuate a switch 31 through a rod 32 which is pivotally connected, as at 33, at its upper end to the trigger arm 28. The switch 31 is supported on a suitable bracket 34 which is secured to the wall 11` of the device. The trigger arm 28 is normally held in elevated position, as shown by the dotted lines in Fig. l, by means of a spring 35 which is adjustably secured at one end to the bracket 34 by means of a bolt hook 36 and is secured at its other end, as at 37, to the outer end of the trigger arm 28. The trigger arm 28 is arranged so that when the refuse 20 is dropped thereon, it will depress that part of the trigger arm 28 which is on the interior of the incinerator and elevate the end thereof, which is on the exterior of the incinerator.

Upon the elevation of the outer end of the trigger arm 28, the pull rod 32 is lifted, causing the element 38 to be lifted from the switch contact arm 39 (Fig. 3) so that the circuit is closed through the switch 31. A second switch 40 (Figs. 4, 6, and 7) is also positioned in the circuit and is arranged to be closed by a push rod 41, which is spring backed, as at 42, so that the rod 41 is normally in elevated position, as shown in Fig. 4. The upper end of the push rod 41 is positioned so that the loading door 14 rests on it. The weight of the door 14 is such as to overcome the tension of the spring 42 with the result that the switch 40 is closed only when the loading door Y14 is shut. This is a safety factor which makes certain that the burner of the incinerator is not operating when the loading door is open. The push rod 41 is adapted to slide in suitable brackets 43 and 44 supported on the inside of the outer w'all 11. A conventional electrically controlled igniting means 45 is positioned near the burner 24 and is arranged to ignite the gas emanating therefrom and its control is connected in the electrical circuit (Fig. 7) and can only ignite the gas from the burner 24 when the switches 31 and 40 are closed. The elements 26, 31, 40 and 4S are preferably positioned in a 25 volt circuit 46 (Fig. 7) which is connected to the low voltage side of a volt transformer 47.

It is believed that the functioning of the device is obvious from the foregoing description.

Having described my invention, what I claim and desire to secure by Letters Patent is:

1. In a device of the character described, a hollow receptacle having a combustion compartment with a clean out compartment below the level of said combustion compartment, a loading door for closing one end of said combustion compartment, a grate separating said combustion compartment and said clean out compartment, said grate having an elongated central opening, a fuel burner beneath said opening for consuming refuse on said grate, an arm pivoted for vertical movement in said opening, said arm having one end arranged to be depressed to be contacted by said door to move said rod in one direction to close said last named switch when said loading door is moved toward closed position, said control means being actuated by said circuit only upon the closing of both of said switches, spring means for elevating the said end of said arm, whereby to open said rst switch I upon the consumption of said refuse, and spring means for moving said push rod in the other direction, whereby to open said second switch when said loading door is opened.

2. In a device of the character described in combination, a hollow receptacle having a combustion chamber and a clean out chamber below the level of said combustion chamber, a grate having a central opening positioned between said chambers, said grate comprising a pair of semi-circular elements, a trigger arm having an end pivoted for vertical movement in said opening, said arm being depressed by refuse on said grate, a fuel burner for consuming the said refuse, said trigger arm having operatively associated means thereon for actuating an electric switch, a switch actuated by said means, an electric circuit connected to said switch, electric fuel lighting and fuel burner controlling elements in said circuit, a second switch in said circuit in series with said first switch, alouding door for said combustion chamber, and spring backed means, movable by said loading door, for closing said second switch, only when said loading door is in closed position, and spring means for elevating the said end of said trigger arm when said refuse has been consumed by said fuel burner.

References Cited in the file of this patent UNITED STATES PATENTS Riebschlager July 3, 1951 

